05000305/FIN-2009003-04
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Finding | |
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Title | Seismic Monitoring System Repeatedly Fails Surveillance |
Description | A finding of very low safety significance (Green) and an associated Non-Cited Violation were identified by the inspectors for the licensees failure to maintain radiation monitoring instrumentation operable that was required by its emergency plans to meet the standards set forth in 10 CFR 50.47(b). Specifically, seismic instrumentation needed for two Emergency Action Levels, HU1.1 and HA1.1, was not maintained operable such that a related Unusual Event notification and an Alert declaration could have been made under certain conditions. Corrective actions were taken for this issue and included revising Emergency Action Level (EAL) requirements to values within the range of the instrumentation. The inspectors determined that the issue was more than minor because the finding, if left uncorrected, would become a more significant safety concern. Specifically, for a seismic event, the deficiency could lead to the failure to declare an Unusual Event for a Natural and Destructive Phenomena Affecting the Plant Protected Area, HU1.1, and an Alert for a Natural and Destructive Phenomena Affecting the Plant Vital Area, HA1.1.The inspectors determined the finding could be evaluated using the SDP and concluded that the risk significant planning standard problem was not a functional failure, nor did it represent a degraded function and, therefore, screened as an issue of very low safety significance (Green). The inspectors determined this was a Green risk significant planning standard problem, rather than degraded or failed risk significant planning standard function, because the process failure affected only one Unusual Event and one Alert emergency classification. The inspectors determined this issue had a cross-cutting aspect in the area of Problem Identification and Resolution, trending and assessment, because the licensee failed to perform aggregate assessments that could have identified and prevented this and related issues earlier. |
Site: | Kewaunee |
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Report | IR 05000305/2009003 Section 1R22 |
Date counted | Jun 30, 2009 (2009Q2) |
Type: | NCV: Green |
cornerstone | Emergency Prep |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.22 |
Inspectors (proximate) | M Munir J Cassidy T Bilik M Kunowski S Burton K Barclay |
CCA | P.4, Trending |
INPO aspect | PI.4 |
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Finding - Kewaunee - IR 05000305/2009003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Kewaunee) @ 2009Q2
Self-Identified List (Kewaunee)
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